50NL 5 max Did I play my underboat ok?

Seat 1: swats8 ($38.35 in chips)
Seat 5: Inndamoney ($66.70 in chips)
Seat 6: Billy H ($52.55 in chips)
Seat 8: Mr.Sogbottom (HERO) [6S,6D] ($65 in chips)
ANTES/BLINDS
Inndamoney posts blind ($0.25), Billy H posts blind ($0.50).

PRE-FLOP
Mr.Sogbottom bets $2, swats8 folds, Inndamoney calls $1.75, Billy H folds.

FLOP [board cards 8S,AH,6C ]
Inndamoney checks, Mr.Sogbottom bets $2, Inndamoney calls $2.

TURN [board cards 8S,AH,6C,8C ]
Inndamoney checks, Mr.Sogbottom bets $4, Inndamoney bets $10, Mr.Sogbottom calls $6.

RIVER [board cards 8S,AH,6C,8C,5D ]
Inndamoney bets $20, Mr.Sogbottom calls $20.

SHOWDOWN
Inndamoney shows [ KD,8D ]
Mr.Sogbottom shows [ 6S,6D ]
Mr.Sogbottom wins $68.
SUMMARY
Dealer: swats8
Pot: $68.50, (including rake: $0.50)
swats8, loses $0
Inndamoney, loses $34
Billy H, loses $0.50
Mr.Sogbottom, bets $34, collects $68, net $34

I've got the worst boat available, and A8 is a real possiblity. Its probably the only possibility though. Did I wuss out and miss a chance to crush him?

you definitely wussed out. You could have bet a bit more on the flop (like $3). You should've reraised the turn too, and then been all-in by the river

[DJ Sensei]

Yea, i'd have no problem getting this all-in with a little more aggression on every street.